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two concentric circles are drawn so that the shaded area is equal to unshaded area. The radius of the outer circle is 6 cm. Find the difference in the radii of the two circles

 Nov 15, 2021
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\(\pi r^2 = \pi R^2 - \pi r^2\\ 2\pi r^2 = 36\pi\\ r^2 = 18\\ r=3\sqrt2\\ R-r = 6-3\sqrt2\)

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 Nov 15, 2021

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